Oracle Linux: Post Leapp Upgrade, Server Gets Stuck During Final Reboot.

APPLIES TO:

Oracle Cloud Infrastructure

Oracle Linux

SYMPTOMS:

Leapp Pre-Upgrade and Upgrade steps where successfully completed, no errors or unexpected inhibitors reported. But the server gets stuck in final reboot as part of the last upgrade step:

[  OK  ] Reached target Remote File Systems (Pre).
[    3.969274] upgrade[525]:   WARNING: locking_type (4) is deprecated, using --sysinit --readonly.
[    3.980715] upgrade[525]:   Allowing activation with --readonly --sysinit.
[    4.046095] upgrade[525]:   1 logical volume(s) in volume group "vg_app" now active
[    4.089772] upgrade[548]: Spawning container sysroot on /sysroot.
[    4.993743] upgrade[548]: Press ^] three times within 1s to kill container.
[   27.509396] upgrade[571]: ==> Processing phase `InitRamStart`
[   27.514074] upgrade[571]: ====> * remove_upgrade_boot_entry
[   27.515286] upgrade[571]: